# Unsupported titles/`num`

| Text style | Emoji style |
| #︎ | #️ |
| Text style is forced with ⟨&#xFE0E;⟩ and emoji style with ⟨&#xFE0F;⟩. ||
| also &num; ||
| # U+0023, &#35; NUMBER SIGN ← " [U+0022] Basic Latin $ → [U+0024] ||
| ﹟ | U+FE5F, &#65119; SMALL NUMBER SIGN |
| ← ﹞ [U+FE5E] | Small Form Variants | ﹠ → [U+FE60] |
| ＃ | U+FF03, &#65283; FULLWIDTH NUMBER SIGN |
| ← ＂ [U+FF02] | Halfwidth and Fullwidth Forms | ＄ → [U+FF04] |

## Translingual
### Symbol

# (English symbol name number sign or hash or pound sign or octothorpe)
* (computing) The hash character.
* (Internet) A hashtag, which is a metadata tag for use in microblogging and social network services, used to label and search content.
* (cartography) Used to denote a village.
* (chess notation) Used to denote checkmate.
    Synonym: ++
* (medicine, shorthand) Used to denote a bone fracture.
    #NOF ― fractured neck of femur
* (mathematics, computer science) Used to indicate string concatenation.
    $1\#2=12$
* (mathematics) Apartness, a binary relation such that if a#b, then any other element c is apart from at least one of a,b. See apartness relation.
* (mathematics) Primorial.
    Coordinate term: ! (“factorial”)
    $12\#=2\times 3\times 5\times 7\times 11=2310$
* (set theory) The cardinality of a set.
    $\#\{5,3,7,11\}=4$
    Synonyms: card, | |
* (linguistics) Used to indicate that a sentence is grammatical but semantically strange.
    #Jane is a great hostess and John is too.
    #I slept a wink last night.
    #Colorless green ideas sleep furiously.
* (phonology) Used to indicate a word boundary.
    d → t / _# ― /d/ devoices to [t] before a word boundary
* (sign language linguistics) Used to indicate a lexicalized sign.
* (Usenet) Used to pad the left side of a quotation from a manual or official source.
    Coordinate term: >
* Alternative form of ‡.
* Alternative form of ⌗ (“key available on telephone keypads”).
* (music) Alternative form of ♯ (“sharp”).

#### Derived terms

* #MeToo (English)
* C# (English)
* eq # (English)
* hr # (English)

## English
### Etymology

Derived from the abbreviation lb for Latin libra (“pound”), via the medieval convention of indicating abbreviations with a bar, ℔.

### Noun

# (plural # or #s)
* (US, food packaging) Pound (unit of weight).
    3# ― three pounds
* (attributive, precedes a numeral) Number.
    Synonym: no.
    #3 ― number three
* (Internet slang, text messaging) Number.
** 1986 December 14, Ben Robbins, “Operator Denies Request For Gay Phone #”, in Gay Community News, volume 14, number 22, page 2:
** 1997 June 17, RYankowski [username], “Why collect new U.S.?”, in rec.collecting.stamps‎ (Usenet):I have collected U.S. Stamps since I was a boy back in the 1950's. At that time there was a low # being printed and it was affordable.
* (Scrabble) In English-language Scrabble, indicates that a word is only found in the British accepted word list and not the North American list.
    PTERION#

#### Related terms
### Further reading

* Number sign on Wikipedia.Wikipedia

## Chinese
### Alternative forms

* (superscript) $^#$

### Pronunciation

* Mandarin
    (Pinyin): hào
    (Zhuyin): ㄏㄠˋ
* Mandarin
** (Standard Chinese)
*** Hanyu Pinyin: hào
*** Zhuyin: ㄏㄠˋ
*** Tongyong Pinyin: hào
*** Wade–Giles: hao$^4$
*** Yale: hàu
*** Gwoyeu Romatzyh: haw
*** Palladius: хао (xao)
*** Sinological IPA : /xɑʊ̯⁵¹/
** (Standard Chinese, erhua-ed)
*** Hanyu Pinyin: hàor
*** Zhuyin: ㄏㄠˋㄦ
*** Tongyong Pinyin: hàor
*** Wade–Giles: hao$^4$-ʼrh
*** Yale: hàur
*** Gwoyeu Romatzyh: hawl
*** Palladius: хаор (xaor)
*** Sinological IPA : /xaʊ̯ɻʷ⁵¹/

### Noun

* (Mainland China) Alternative form of 號 / 号 (“number”), used after a numeral.